Carl heinrich koerner



(No Model.)

o. H. KOERNER.

BOOK REST.

Patented Dec. 21,

'UNITED STATES PATENT OFFICE.

)ARL HEINRICH KOERNER, OF HAMBURG, GERMANY.

BOOK- REST.

SPECIFICATION forming part of Letters Patent No. 595,779, dated December21, 1897.

Application filed May 12, 1897. Serial No. 636,261. (No model.)

T0 LLZZ whom t may concern:

Be it known that I, CARL HEINRICH KOER- NER, a subject of the GermanEmperor, and a resident of Hamburg, in the German Empire, have inventedcertainnew and useful Improvements in Rests for Use with LargeAccount-Books and the Like,of which the following is a specification.

The present invention relates to improvements in rests for use withlarge accountbooks and the like, the object being to make such restsmore expedient and handy by attaching the usual tongue to be placedbetween the leaves of the book in such a manner to the actualsupporting-plate that it may be shifted either to the right or to theleft end of the supporting-plate; and with this end in view my inventionconsists of certain novel features of construction and combinations ofparts, as hereinafter will be fully described.

A rest made according to my invention is illustrated in the accompanyingsheet of drawings, in which- Figure lis a perspective view of theimproved rest as applied to a book; Fig. 2, a view showing the lowerside of the rest; Fig. 3, a cross-section on the line I II, Fig. 2. Fig.4 is a similar view as Fig. 2, the tongue being adapted to slide along alongitudinal guidegroove of the supporting-plate. Fig. 5 illustrates aside view of Fig. 4, and Fig. 6 a sectional end View of 'a modificationof my improved rest when applied to a book.

Similar letters refer to similar parts throughout the several views.

The improved rest, adapted for use more particularly in making entriesin large-sized account-books, consists of the well-knownsupporting-plate a and of the tongue b, arranged at an angle to thesame. This tongue may be shifted either to the right or to the left endof the said supporting-plate, for which purpose it is inserted into oneof the transverse guides or slideways a a', provided on thesupporting-plate a, Figs. 2 and 8, or the said tongue Z) may be slidalong a longitudinal guide-groove a2, with which the said plate 0, maybe provided, Figs. 4 and 5. .The tongue b is in the usual mannerv placedbetween the leaves of the book into which entries are to be made, Whilethe free end of the supporting-plate rests upon the opposite the tongueb is placed upon the right-hand or the left-hand side of the book one ofthe said fingers, either on the left or on the right, is placed over thebook edge. In addition to this, when it is desired to Write on the halfof the book which, in the horizontal position, does not touch thetable-surface, such half .may be supported by a separate rest cl,provided with step-like notches or offsets, a feature which will proveparticularly advantageous in those cases where the book portion sosupportedis considerably thinner than the remaining part 0f the'l book.

The arrangement herein described affords a convenient and reliable restto persons engaged in making entries in an account-book, especiallywhere large-sized books are used, as well as where entries have to bemade on both sides of a book.

In a slightly-modified form of the improved writing-rest thesupporting-plate proper is formed of two portions or halves a3 a3,hinged or otherwise movably connected, as shown at a4, Fig. 6. For thecentral guide a', provided for the tongue b in the arrangement firstdescribed, there are here accordingly substituted two guide-rails o. a',one upon each half a3. A double or folding supporting-plate such as thisenables the offset-rest d, mentioned above, to be dispensed With, assuch plate, owing to its movable point, is capable of accommodating, ifnecessary, the angular shape of the open book. (See Fig. 5.) Besides, awriting-rest comprising such a double and folding plate a3 a3 affordsthe advantage that it may be folded up into compact shape when not inuse.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, is

l. A book-rest comprising a rest-plate a of a length substantially equalto the width of IOO an open book, a retaining-plate b adapted to beshifted from one side to the other of the longitudinal center of saidrestplate, the latter provided near eneh end with a retaininggroove andL finger c fitting either of said grooves, substantially as and `for thepurpose Seiforth.

A booke-est Comprising a rest-plate a., of :t length substantially equalto the Width of an open book, said plate composed of two plates hingedtogether, 'a retaining-plate shiftable from one to the other side of thehinge-joint of said rest-platte, the latter provided near eaeh end withit retziining-groove and o linger fitting either groove, substantizillyas and for the purpose set forth.

3. A book-rest comprising ai rest-plate a of

